<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../js/vue.js"></script>
</head>

<body>
    <div id="root">
        <h2>人员列表</h2>
        <input type="text" placeholder="请输入名字" v-model="keyWord">
        <button @click="sortType = 2">降序排列</button>
        <button @click="sortType = 1">升序排列</button>
        <button @click="sortType = 0">原顺序</button>
        <ul>
            <li v-for="(p,index) of filPerons" :key="index">
                {{p.name}}-{{p.age}}-{{p.sex}}
            </li>
        </ul>
    </div>
</body>
<script>
    new Vue({
        el: '#root',
        data: {
            keyWord: '',
            sortType:'0',
            persons: [
                { id: '001', name: '马冬梅', age: 19, sex: '女' },
                { id: '002', name: '周冬雨', age: 20, sex: '女' },
                { id: '003', name: '周杰伦', age: 21, sex: '男' },
                { id: '004', name: '温兆伦', age: 22, sex: '男' }
            ]
        },
        computed: {
            filPerons() {
                const arr = this.persons.filter((p) => {
                    return p.name.indexOf(this.keyWord) !== -1
                })
                if(this.sortType) {
                    arr.sort((p1,p2)=>{
                        if(this.sortType) {
                            return this.sortType === 1 ? p2.age - p1.age : p1.age - p2.age
                        }
                    })  
                }
                return arr
            }
        }
    })
</script>

</html>